I find it interesting that there are several 1 star ratings with no written reviews on this lens. This lens is great. Maybe even spectacular. If you need a single lens solution that matches Primes in IQ, this is the one for you! No questions. Its disadvantages compared to Primes are: 1) its F4 (but medium format F/4) and it's bigger/heavier than Primes. Otherwise, if you can afford (or just have to carry) 1 lens on the GFX system - this one is amazing - no question.
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